Bobbin for thread and the like.



J. STEWART.

BOBBIN FOR THREAD AND THE LIKE.

nruonxon FILED nov. 1, 1913.

1,104,325, Patented July 21, 1914.

2 SHEETS-SHEET 1.

J. STEWART.

BOBBIN FOR THREAD AND THE LIKE.

APPLICATION mm) NOV. 7, 1913.

1,104,325, Patented July 21, 1914, l l

2 SHEETS-SHEET 2.

UNITED STATES JAMES STEWART, OF

CATFORD, ENGLAND.

BOBBIN FOR 'DHREAD AND THE LIKE.

Specification of Letters Patent.

Application filed November 7, 1913.

Patented July 21, 1914.

Serial No. 799,734

To all whom it may concern Be it known that I, JAMES STEWART, sub-' ject of the King of- England, residing at 322 Stanstead road, Catford,England, have invented new and useful Improvements in a Bobbin forThread andv the like, of whichthe following is aspecification.

This invention relates to improvements in bobbins, for threadv or thelike of the type disclosed in my copending application Serial No. 765765 filed 6th May 1913. These bobbins comprise a tubular orcylindrical body portion made of fibrous material, such as paper,card-board or the like, and end disks having bosses and flanges. Theflanges of the disks are turned over on to the body. portion in such amanner as to provide flanges for holding the material to be'wound on thebobbin. By the termbobbin all devices such. as reels or spools areintended to be "covened. In the known constructions of these bobbins, adisk of strong millboard; is first inserted in the ends of the tubularbody to serve as a support thereto and a disk of metal or cardboardwhereof theedges are serrated is then applied; to each. end ofi thetubular body, the serrated edge thereof be ing turned so that. it entersandi penetrates the material of the tubular-portion.

According to the present invention, in? stead of'employing disksofmillboard on thelike, the end disks are=formed with a centralbossportion which fits into the ends of the tubular body and serves as a.support. thereto. The peripheral V or-tion of this boss. may beroughened, fluted punched up portions for giving greater security to thejoint, between! it and: the body portion. The latter is of any knownshape, such as a cylindrical or tubular bodywhieh may or may not beformed with expanded.

or conical ends, the boss portion of the end! disk being formed in eachcase ofa con figuration similar to that of. the ends of the bodyportion.

In order to enable this invention to be: readily understood reference ismade-to the accompanying drawings inwhich;

Figure 1- is a-flongitudinal section of a cylindrical body. Fig. 2 is anend elevation, andFig. 3a centralverticalisectionof a suit-- able metal:end diSkytWO' of such disks beinga groovedor have:

shown applied to the cylindrical body in Fig. 4 which is a centrallongitudinal section. Fig. 5 is a central longitudinal section showingtheassemblage of= parts seen in- Fig. 4 supported between two mandrelsor spindleends. Fig. 6 is an end view ofan end' disk formed with asuitably grooved or roughened boss portion. Fig. 7- shows. in:longiturdinal sectionv the partly turned ov-enperiph cries of the end. disksafterhhe application of a grooved wheel. Fig. 8 shows theeflfectspnoduced bya grooved: spinning wheel. Fig. 9Eshows-a modification of.Fig.

11. Fig. 10 is a longitudinal section oii a; body having; flared. orexpanded ends andi Fig. 1L shows the application thereto of disks formedwith; central conical boss por- :tions. Fig. 12 illustrates invertioalsection. Ea disk having; the edge bounding the central: hole upturnedfor imparting: stiffness in: any ;.known.- manner. Fig: ism-anelevationiofi 5am end disk formed" with a. serrated periph- Zenalportion, and. Fig; 145' isza' longitudinal section of afinishedineelfittedwith suoh-endi 1 disks. Fig; 15.=is-an' elevation ofan end disk- !having a circular series of punched perforaltions near itspeniphery, the punching pro- I ducingi jagged; edges onone side of.such' disk. Eas shownin: Fig. 116, which enable thepeiripheral portiontosecurely hold on tothe end of the body when spundowmas shown! in}Fig.' 17. Fig; 18 is-a view showing-a.modi f fica-tionwherein the-endsof the-tubular body {are expanded and: the-edge'portionsoffithc disksturned over simultaneously,

Referring to the drawings (5 represents the body consisting. ofi a. tubeor cylinder iwhich may be made from several convolutions ofa sheet orstrip of paper on cardboard,.the convoluhions beingaseourely glued=- onpasted together. by any! method a are-plates on disks stamped out fromtinplate, iron. or othen similar material, the boss portion beingsuitably pressed. out in any desiredmanner. Onemft these plates isfirmly pressedinto each end of the body a as shown in Fig: 4. Thetubular body with the disks fitted theretoisinserted. between 5 twomandnels or shafts d. asshowm inFig. 5. To insure that the mandrelsshall have a good grip on the disks'li, the ends of: the imandrels. maybe covered with rubber on i 17 shows how these ag e other frictionaldevices or, alternatively, the peripheries of the mandrels may begrooved and if desired grooves f, may be made on the peripheries of thebosses of the end plates 0. The grooves f in the bosses are also of usein preventing the end disks from slipping around inside the tube a. Tothis end the peripheral portions of the bosses may also be roughened,fluted or formed with punched up portions. The flanges of the disk 0 arethen spun over and turned in any manner so that the ends of the bodyportion are pressed between the bosses and the flanges of the disks 0,as shown in Figs. 8

and 9, to form tight joints between the disks and the body portion.

en a very deep flange is required, the ends of the paper, cardboard, orother tube a may be expanded or flared as at n, Fig. 10, by means ofheated dies or revolving cones or by any other known means, before theinsertion of theend disks. The boss portions of the disks 0 have aconical form as shown in Fig. 11, so that they fit the expanded orflared ends "it. The turning over of the edges is accomplished in anydesired manner. While stamping out the disks a lip or curl '0 may beformed in an known manner around the center hole o each of the disks asshown in Fig. 12, which lip gives the bobbin a firmer and more even gripon the spindle of the winding machine as well as adding stiffness andavoiding a sharp edge. The end disks may also be fastened to the tubularbodies by means of serrations or teeth 13 cut in the peripheries of thedisks as shown in Fig. 13. These teeth when curled over during. spinningare forced through the-cardboard tube and by turning over a ainst theinner bosses securely fasten the dis 0 to the tube a Fig. 14.

Instead of the teeth being cut as in Fig. 13 they may be formed aroundthe rim portions of the disks by unching perforations in the metal disksas own in Fig. 15. Fig. 16 is an enlarged rear view of one of theperforations showing thev jag 'd edges t. Fig.

' get? are forced into the'cardboard tubular b y 0. Should the body a sothin as to require support du spinmng such support may, be obtained bplacing the tube in a cylindrical case ma e in halves which areseparable in order to allow of the finishedbobbin being withdrawn.

The 'ends of the bodies a-may be expanded bly the insertion of coneshaped bosses b on t e end disks and the edges of the disks turned overand fixed at the same operation thus completing the bobbin in one singleoperation see Fig. 18. The fixing of the end dlsks or plates while theends of the tube are being expanded by the cone shaped bosses of the enddisks which in turn are held in position by the tapered ends of themandrels or shafts h, prevents the expanded ends" at of the tube fromreturning to their original shape when released from the end pressuredue to the mandrels. The bobbin shown in Fig. 18 may also be constructedwith grooves in the sides of the conical boss portions of the end disks,with upturned edges bounding the central holes in said boss portion andwith serrated edges as to the periphera portions of the end disks.

Claims:

1. ,A bobbin comprising a tubular body portion made of fibrous material,vmetallic end disks havin each a central boss portion which fitstighfiywithin each end of said body portion, there being a central opening insaidlioss portion, flanges on said disks projecting over and turned ontothe ends of said body portion, and serrated portions on saidflangeswhere the latter are in contact with the body portion, substantially asdescribed.

2. A bobbin comprising a cylindrical body portion made of fibrousmaterial, conical flared out ends on said body portion, metallic enddisks having each a conical boss portion and a central hole in each bossportion, and serrated edges on the peripheral portions of said disks,said peripheral portions projecting over the edges of the body portionand belng turned over onto the ends of said body portion, substantiallyas described.-

3. bobbin comprising a cylindrical body portion made of fibrousmaterial, conical flared out ends on said body portion, metallic enddisks having each a conical boss ortion, there being a central hole ineach oss portion, grooves in the sides of said conical boss portion, anupturned ed e bordering each central hole, and serrate edges on theperipheral portions of said disks, said peripheral portions projectingover the edges of the body ortlon and being turned over onto the en 5 ofsaidbody portion, substantiall as described.

4. A bob in comprising a tubular body portion made of fibrous material,metallic enddisks, each having a central boss portion seated within andengaging the ends of said body portion, and flanges on saiddisksprojecting over and turned against ,the body portion at the endsthereof to compress the ody portion between the bosses and the turnedportions of the flanges to hold the parts to ther'; substantially asdescribed.

5. -'A 'bbin comprising a tubular body portion made of fibrous material,metallic end disks each having a central boss portion an externalfriction surface on the sides 0% said boss portions in direct contactwith the inner face of the body portion, and flanges In testimonywhereof I have signed my on said end disks projecting over and turnedname to this specification in the presence of against said body portionat the ends theretwo subscribing witnesses.

to compress said body portion between JAMES STEWART. the bosses and theturned portions of the Witnesses: flanges to hold the parts together;substan- HOWARD C. ELLIOTT,

tially as described. W. E. ROGERS.

